Reverse DNS PTR Resolver
Reverse DNS Lookup
Perform a quick Reverse DNS PTR lookup to determine the official system hostname and ISP carrier mapped to any IP address.
Reverse DNS Resolution Details
Target IP Address
139.12.0.0
Network Provider (ISP / ASN)
Unknown ISP
Reverse Hostname (PTR)
No Pointer (PTR) record configured for this IP.
Remote Server Geolocation & Time
Country
Germany
Germany
Region & City
State of Berlin, Berlin
Postal Code
10117
Coordinates (Lat / Lon)
52.5151, 13.3988
Timezone Mapped
Europe/Berlin
Server Local Time
11:07:03 - 12.09.2026
Allocated RIR Network
RIPE NCC (Europe, Middle East, Central Asia)
Autonomous Owner
AA LAN
Live Security Reputation Check
100% Clean Reputation
No spam, botnet attacks, or national threat flags identified for this host.
Spamhaus Zen RBL:
CLEAN
Barracuda Central:
CLEAN
USOM Threat Center:
CLEAN